This document provides language functions for agreeing and disagreeing in English. For agreeing, it lists phrases like "I agree 100%", "That's exactly how I feel", and "Absolutely". For disagreeing, it includes phrases such as "I don't think so", "I beg to differ", "That's not how I see it", and "I totally disagree". It also notes that saying "I suppose so" indicates weak agreement. The document concludes by recommending additional English learning resources.